Type-writing machine



(No Model.)

A v S. S. LAV EY.

TYPE WRITING MAGHINE.

No. 496,419. Pate ay 2, 1893 ms nosms PETERS cu. PHDTOLH'HQ. wAsnmnmn, a. o.

UNITED STATES PATENT OFFICE.

SAMUEL S. LAVEY, OF LIMA, OHIO.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 496,419, dated May 2, 1893.

Application filed August 18 1892.

To all whom it may concern: I

Be it known that I, SAMUEL S. LAVEY, a citizen of the United States, and a resident of Lima, in the county of Allen and State of Ohio, have invented a new and useful Improvement in Type Writing Machines, of which the following is a specification.

My invention relates to certain improvements in type writing machines.

In the accompanying drawings Figure 1 is a perspective view, Fig. 2, a side View, Fig. 3 an end View of my machine, and Fig. 4 a detail View of one of the cams.

The object of my invention is to provide a simple form of type writer free from all complications, and the principal point of improvement is in the means of operating the type.

On a bed 1, I mount a wheel 2 having the letters of the alphabet and such characters and numbers as are found useful in correspondence or business. This wheel 2 is mounted on a shaft 3, having a series of heart shaped cams 4 thereon, one cam for each letter or character, the neck of each cam being flush with one side of the shaft, and a little farther around on the shaft than that of the preceding cam. In the neck of each cam and extending a short distance into the shaft, is a hole 5, and opposite each succeeding hole, on the wheel 2 is a different letter projecting from the face of the wheel. Pivoted on the bar 6, is a set of keys 10, one for each letter and character on the wheel 2, and depending from each key is a pin 7, suspended vertically over the heart-cam that has its neck and hole 5 in line with the corresponding letter on the wheel to that on the key to which the pin is attached.

Located beneath the keys a short distance is a rocking bar 8 held in an inclined position by a coiled spring 9, and attached to the bottom of this rocking bar Sis an arm 11, pivoted to a rock arm 12, extending out from the impression roller frame 13. An inking ribbon 14 wound on rollers 15, 16 extends along underneath the type.

In operation, the paper is put around the impression cylinder 13 beneath the type Wheel 2. The operator strikes one of the keys 10,

Serial No. 443,467. (No model.)

having the letter thereon the same as he wishes to print. As he depresses the key the pin 7 strikes the heart-shaped cam pro eoting from the shaft, and in its downward course revolves the cam shaft 3, and wheel 2, until the pin enters the hole 5 in the neck of the shaft, thus stopping the revolution of the cam, shaft, and wheel, and bringing the letter on the wheel directly in line beneath the pin 7, and hole 5. The further movement of the key rocks the rock shaft 8, and through the lever 11, and pivoted arm or frame 12, brings the paper and impresion roller up against the type cylinder, making the impression. A coil spring raises the key and rock arm 8 when the finger is removed, and the pressure of any other key revolves the shaft by means of the cam beneath the key in a similar manner. 1

.Each key, besides having the letters of the Roman alphabet may have those of the German or other alphabets, extra keys being provided for extra letters and the type wheel made removable from its shaft to allow of the substitution of other type wheels with corresponding alphabets. Or the different alphabets may be arranged side by side on the same type wheel, and shifted into printing position by the shifting lever 20, pivoted at 22, and, engaging with rack 21, near its outer end.

What I claim is 1. In a type writer the heart-shaped cams, mounted on and around the axis of the type wheel, the holes 5 placed in different lines around the axis, the type on the wheel, each type being placed in line with one of the holes in the cams and axis and the keys 10, each key having a pin 7 that fits in the hole in line with the type on the wheel, correspondof the others and the hole in the neck of the ating mechanism, as and for the purpose set shaftand cam, and key levers for operating forth. same as and for the 111' ose set forth. 1 1

4;. In a type wri elg the revolving type bAMUB'L LAVLY' 5 Wheel, the heart shaped cams, mounted on WVitnesses:

the shaft, the neck of each cam being in dif- EDWARD K. CAMPBELL, ferent line from all the rest, and the oper- J. D. MGL'AUGHLIN. 

